Gauge for gasoline tanks, etc.



Nov. 11, 1930. H. MOSSBACH GAUGE FOR GASOLINE TANKS, ETC

Q ATTORNEY Filed March 1, 1923 INVENTOR HENRY MOS-SBHCH connected by a conduit 4 with the carburetor intermittently to draw gasoline from the sup- Patentecl Nov. 11, 193i) -z v a if i UNITED T E PATENT ewe ewes non GASOLINE TANKS,. Ere.

Application filed March 1, 1923. serial no. 21,981. I This invention relates to improvements in' able indicating liquid designated at 7 The. depthfga-uges and has for its principal obhousing has a laterally offset portion "6 at. ectto provide a gauge suitable for use in lts lower end provided with atop wall 6 A automobiles, trucks, etc. for the purpose of gauge glass 8 that is suitably graduated for. 5 indicating the amount of gasoline in the fuel designating the amount of gasoline. in the 5.

supply tank. i supply tank is mounted vertically on the It 1s a further object of the invention'to wall 6* in communication, at its-lower end, provide a gauge of the above character With a.reduced, inwardly Curvednipple 8? 1 adapted to be mounted on the dash of a ethat extends (lOWll iIl'CO the llOUSiIlg near its 19 hicle, or at any other point easily seen from h m Wall- 1 1 -1 the drivers position, and which comprises Extending Vertically through the supply a gauge glass with an indicating liquid movtank 1, is a tube 10 Which, at its lOWGIKGIlCl, able to different levels therein in accordance is connected- With a-condllih 11 that leads t with the depthof the liquid within the supthe vacuum tank 3, 13-111 c eagravity feed ply tank and under the i fl of ai system is used, itwould lead directly to the trapped under pressure in a tube that carburetor. Connectedlwith the upper end n ets th gauge ith th ly t k, of the tube 10, is a conduit or tube 12 which In accomplishing th d eth bj t leads to andopens into the housing 6 above; of the invention, I h o id d th i the normal level of theindicating liquid.

29? proved details of construction, the preferred Gasoline from the pp y tank flows into forms of which are illustrated in the accom- F Pressure tube 10 through a Small pe panying drawings, wher in I V mg 15 therein that is located near the bottom Figure 1 is adiagrammatic illustration, oflthe krl and which, for a purpose prepartly in cti h i th li sentlyapparent, is substantially smaller in ,2 l t k, the gauge d n e ti ith th area than the cross sectionalarea ofthe paslatter and with the vacuum feed tank. 1 geg the Conduit Withill Figure 2 is an enlarged, sectional view of pp end f the p r tube 10 SPI' Vi the tube ext nd d thr h th supply t k, a normally. open backcheck valve 16,which illustrating the back-check'valve and bubbleis placed there f e p p se fp i g Q9. check valve therein. 7 back pressure or splashing in theitank'i Figure 3 is a sectional view of an alternam g g n i e gauge 7 tive construction. l meeting-tube 12.; 1 i i V v Referring more in detail to the drawings I have also'provided a bubble-check. within 1 designates what may b th ga lin thelower end of the pressure tube-1O which l t k f n t bil 2 a t f th consists'of a closing wall 17 wherein there dash board or instrument'board, and 3 the i3 a small ap ThiS aperture iSJOf vacuum tank of a well-known feed system Sufficient z t0 pe it a y fiOW g qwhereby gasoline is delivered to the carbuline, but Willv h ka hack flow 015 les retor of the engine; this latter tank being 111 Certain p p ty much ke p y attractionwhich holds the bubbles back. V .0a and by a conduit 5 with thesuction manifold With the de i so constructed a d 6011- of the vehicle engine, not shown. The vacun d as shown, W en the n 1 is emp y h um feed system is not herein illustrated in Vel f liquid inth tu e 8 Sh uld be made detail, but it will be stated that it operates o register with the zero line on the tube.

Then, as the tank is filled, gasoline will 9 ply tank 1 into the tank 3 from which it is enter the pressure tubelOthrough the. apfed as used to the carburetor. erture 15, thereby trapping air within the Mounted on the dash, or instrument board, tube and causingthe indicating'liquid in the 2 is a gauge, or indicator, comprising a closed housing 6 to be f rced in the g g ub 1 housing 6 thatis partially filled with a-suitthe rise ofthisliquid in the gauge tube indicating the height oramount of gasoline in the supply tank.

I During active periods of the vacuum feed device, the.liquid-in.tube.10 will be withdrawn together with a portion of the air' .conta ined'in the tube 12 and-the gauge hous I ing chamberbefore liquid flows throughthe port from the tank 'liQIf the reduction in pressure in the gauge housing chamber above the liquid trap 7 iss'ullicient, theatmospheric pressure will force air through the vent 9 forcing the indicating liquid from the tube 8 and allowing the airto bubble up through the liquid seal 7' and enter. the'tube .12. As soon as suction in' the tube 11 stops,- 1 liquidfrom the supply tankwillagain-fiow:

into the tube 10 through the port 15 and will efiect'a new, accurate-reading inthe gauge 1 It will be-stated here that the nipples-8 that extends from thelower end of the gauge tube-8 toward'the base 'ofthe'housin'g 6 is providedfor the followinglreasonsrlt is desired thatthe zero, or empty, mark of the gaugebe located-near the lower end of the gauge tube. It is required for accuracy that the liquid level ;in they-housing be even with 7 this mark'whenthe supply tank isempty and while there is no air under pressure confined in the tubes '10 and '12' and upper portion of the housing 6. Now, when the liquid I level in housing '6'is lowered below the end of the {tube 8 by the v introduction of. air

under pressure into the housing fi incidental to'a rise of gasoline in the'tube 10 after-the supplytank is filled, there is still a conneclevel in the housing fi: was forced below the ofl'set'tpoition 6 5 i In Figure 3, I have illustrated. an alterna- -tive' constructionwherein; av tube correspo'riding iinpurpose to thetube10 in the a otherform, iswlocated exteriorly of the tank 1' and is-connected to the conduit 11,"being provided at its lower end with a small port 2115 into the. supply tank connection and a larger port 22 into the carburetor connection.

\ The port 21 .serves the purpose of port 15 in as the bubblecheck. I w It is to be understood that "can be used in various ways and for various th pressure tube 10 and the port 22 and the. closing purposes other than herein specified, and that changes in detailsof construction could be I made-without departing fromthe spirit of the: invention; 1

is further apparent that the system will operate successfully without the inclusion of of improvement. 7 I v Having thus described myinvention, what wall-wherein itis contained serves "such systems the valve mechanism 16 or the bubble check 17; these simply being included as features I claim asnew therein and desire to secure by Letters-Patent, is:

q 1. .Incombination', .a gasoline supply tank, an intermittently operating suction device having atube for withdrawing gasoline from the tank, a liquid level gauge adapted tovbe tion'at its" lower end with the suction tube and-atzits upper. end with the liquid level gauge, and having a relatively small port '75 i operated byair'pressure and a pressure tube extending through the tank having connec- I therein-adjacentthebase ofthe tankthrough which gasolinemay flow 'into the tube .dur-.

ing inactive periods of the suction. deviceltof 7 cause areadingto be shown'on the gauge in.

accordance with ,the degree' of pressure. created by the airthatis trapped in the upper:

portion of-the pressure'tube when gasoline from the tank. rises therein, the said port" being of in'suflicient area; to readily L supply: the

suction tube iii order that. the upper portion of thetube will be cleared of gasoline and all] air pressure. removed fromthegauge during active periods ofthe suction device.

2; -In'combii1ation, a gasoline supply tank,

an intermittently operating suction. devicejf havingatube' for withdrawing gasoline from a the tank, a liquid level gauge'adapted tobe operated by airlpressure, a pressure tube extending through: the tank; having-connection:

atfits lower end'with the suction tube and at its upper end withthe level gauge,wand hav ing arelatively small port therein" adj acent. v

the base.of'thetankthrough which gasoline may flow into the'tube duringin'active periods of the suction device to'causea' reading toibe' shown on. the gauge in accordance with the' degree of pressure created by the air thatlis V trapped inthe upper. portion-of the pressure:

tube when gasoline from thetank rises therein, the said port being of'iiisuflicientaarea to readily supply the suction tube in order. that the upper portion of the pressure tube willi be cleared of. gasolineand all air pressure removed from thegauge during active periods of the suctiondevice, anda'back'check valve located: withinflthe upper portionof the .pres'sure'tubeabove the levelof the top-of the t nk and adapted'to' be lifted toclosed position ny ssive rise of gasoline in the tube, I w I p 3. In combination, a gasoline supply tank,'. an intermittently operating suction device;

having'a tube forwithdrawinggasoline from the tank, a gasoline level indicating gauge adapted to be operated by air pressure and.

comprising a closed housingcontaining an indicatingliquid and a verticalgauge. tube. communicating at its lower end with the housing, so as to receive the. indicating liquid thereln, and having an atmospheric opening ing connection at its upper end with the hous- 7 ing of the gauge at a point above the liquid level in the latter, said pressure tube having a relatively small port therein adjacent the base of the tank through which gasoline may flow into the pressure device during inactive perlods of the suction tube to cause a reading to be shown on the gauge tube in accordance with the degree of pressurecreated by the air that is trapped in the upper portion of the pressure tube and its connection with the gauge housing incidental to rise of gasoline in the pressure tube, said port of the tube being of insufficient area to readily supply the suction tube, so that the pressure tube will be cleared of gasoline and the gauge relieved of all air pressure by the intaking of air through the atmospheric opening of the gauge tube and the connection between the gauge housing and the suction device during active periods of the suction device.

Signed at Seattle, King County, Washington, this 8th day of January, 1923.

HENRY MOSSBACH. 

